This is a beam combiner that allows a 10600um beam (CO2 laser) to pass through it like a lens. It reflects other wavelength light beams, for example, the red laser pointer with 650nm, which is like a mirror. It's ideal to add a "red dot" to target a CO2 laser machine so it's without the hassle of adding a red laser pointer to the laser head.
-Reflection/pass: 60/40% @ 650nm
-Support laser tube up to 200W